Question

IN HOW MUCH TIME WILL the SI on 3500 at the rate of 9% per annum be the same as SI on 4000 at 10.5 per annum for 4 years​

Answer 1

Solution :

S.I on $4,000 at rate 10.5% = 10.5/100 = 0.105 for 4 years

S.I = ( P x R x T) /100

= 4000 x 0.105 x 4

S.I = $ 1,680

The interest of $1,680 is the same as that on $3,500 at 9% p.a for suppose 't' years.

S.I x 100

Time = t = ------------

P x R

1680 x 100

Time = t = ------------

3500 x 9

168,000

Time = t = ------------

31,500

Time = t = 5.33years.

Answer 2

Answer:

in how much time will the simple interest on rupees 3500 at the rate of 9% per annum be the same as simple interest on rupees 4000 at 10.5% per annum for 4 years